Plan Ahead
As with any shoot the better you plan the more likely you are to have a successful outcome.
Take a translator / fixer
In the Arctic, as with any wilderness, it is always beneficial to have a translator/fixer who has specific knowledge of the area and peoples that you will be working with. They will be able to give you a good assessment of the safety requirements and logistics whilst you are still in the planning stages.
Consider taking a dedicated safety advisor